docs: def show_absolute_url(context, page, lang=None):
      """
      Show the url of a page in the right language
  
      Example ::
  
          {% show_absolute_url page_object %}
  
      You can also use the slug of a page::
  
          {% show_absolute_url "my-page-slug" %}
  
      Keyword arguments:
      :param page: the page object, slug or id
      :param lang: the wanted language \
          (defaults to `settings.PAGE_DEFAULT_LANGUAGE`)
      """
      if not lang:
          lang = context.get('lang', pages_settings.PAGE_DEFAULT_LANGUAGE)
      page = get_page_from_string_or_id(page, lang)
      if not page:
          return {'content': ''}
      url = page.get_url_path(language=lang)
      if url:
          return {'content': url}
      return {'content': ''}